Updating the OSX project to listen to some more windows messages.
Some .gitignore updates for MacOSX.
Initial attempt to update keys.h for Cocoa.  I think we might need an internal function to map Cocoa key id's to ClanLib id's.
Fully implementing the OSX mouse position for mouse and keyboard events.
For now, just swallow all exceptions in an attempt to get the Cocoa App to fully shutdown.
Adding one last function to get the Cocoa App to shutdown.
This is a hack commit to get the Cocoa App to fully shutdown.  I am pushing it up only for illustration purposes.